| 摘要 |
PURPOSE:To enable to change the compensation amount of the pitch error of a feed screw by a structure wherein the compensation amount stored in an external memory is able to be transferred to a memory area, in which compensation amount is stored for storage type pitch error compensation. CONSTITUTION:The compensation amount of pitch error is computed in a user- designated macro 9 based upon the coordinate data t the time when a skip signal is inputted and the coordinate data stored in the memory area 10 and then stored in a memory 11. The pitch error compensation data stored in the memory 11 is directly transferred to a memory 13, which is employed for storage type pitch error compensation function, in response to special instruction code, when the memory capacity of the memory 11 is enough large, or once transferred to the external memory 14 and, after that, re-transferred to the memory 13, when the memory capacity of the memory 11 is small. The compensation data in the memory 13 is transferred to the memory 15 at the time when a machine is reset to its original point and the pitch error compensation is performed based upon the data in the memory 15. |
